Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, USA.
Department of Physical Geography, Utrecht University, Utrecht, The Netherlands.
Sci Data. 2024 Apr 17;11(1):395. doi: 10.1038/s41597-024-03244-w.
We provide a dataset of irrigation water withdrawals by crop, county, year, and water source within the United States. We employ a framework we previously developed to establish a companion dataset to our original estimates. The main difference is that we now use the U.S. Geological Survey (USGS) variable 'irrigation - total' to partition PCR-GLOBWB 2 hydrology model estimates, instead of 'irrigation - crop' as used in previous estimates. Our findings for Surface Water Withdrawals (SWW), total Groundwater Withdrawals (GWW), and nonrenewable Groundwater Depletion (GWD) are similar to those of prior estimates but now have better spatial coverage, since several states are missing from the USGS 'irrigation - crop' variable that was originally used. Irrigation water use increases in this study, since more states are included and 'irrigation - total' includes more categories of irrigation than 'irrigation - crop'. Notably, irrigation in the Mississippi Embayment Aquifer is now captured for rice and soy. We provide nearly 2.5 million data points with this paper (3,142 counties; 13 years; 3 water sources; and 20 crops).
我们提供了一份美国按作物、县、年和水源划分的灌溉取水量数据集。我们采用了之前开发的框架来建立与原始估计值配套的数据集。主要区别在于，我们现在使用美国地质调查局（USGS）的变量“irrigation - total”来划分 PCR-GLOBWB 2 水文模型的估计值，而不是之前估计中使用的“irrigation - crop”。我们对地表水取水量（SWW）、总地下水取水量（GWW）和不可再生地下水枯竭量（GWD）的发现与之前的估计值相似，但现在具有更好的空间覆盖范围，因为最初使用的 USGS“irrigation - crop”变量中缺少几个州。本研究中的灌溉用水量增加了，因为包括了更多的州，并且“irrigation - total”比“irrigation - crop”包含更多种类的灌溉。值得注意的是，现在包括了密西西比河湾含水层的水稻和大豆的灌溉用水。本文提供了近 250 万个数据点（3142 个县；13 年；3 个水源；20 种作物）。
